WASHINGTON -- When Dillon Peters sustained multiple fractures in his left thumb after being struck by a comeback liner in April, there were concerns that he could miss the rest of the season, and perhaps more.
Things have changed for the better for Peters, who is back with Double-A Jacksonville and receiving strong consideration for a September callup with the Marlins. On Tuesday, the left-hander, who is ranked as the organization's No. 4 prospect by MLBPipeline.com, also had his offseason tentatively scheduled as he's been selected to the Salt River Rafters roster in the Arizona Fall League.
2017 Arizona Fall League rosters
Peters is one of seven Marlins prospects on the Salt River preliminary roster.
"Dillon, obviously, had a nice spring for us," Marlins manager Don Mattingly said. "You loved his composure and the way he pitched. He had the injury this year, and we knew we were going to try to get him some extra innings, and get him built up, moving forward."
Joining Peters will be left-hander Miguel Del Pozo (Class A Advanced Jupiter), right-hander Ben Meyer (Jupiter), lefty Scott Squier (Jupiter), catcher Rodrigo Vigil (Jacksonville), infielder Peter Mooney (Triple-A New Orleans) and outfielder Braxton Lee (Jacksonville).
The Arizona Fall League opens its 26th season on Oct. 10, and it is considered a "finishing school" for highly regarded prospects.
The rosters announced on Tuesday are subject to change. Peters, for example, could find himself in that situation. The lefty, who turns 25 on Thursday, is expected to be a September callup for the Marlins. If his workload is heavy in the final month -- and if the club makes the playoffs -- that could impact whether he goes to the Fall League.
For now, Peters regained the form he showed before the thumb injury sidelined him from April 17 to July 27. Peters is 6-2 with a 1.97 ERA in nine starts for the Jumbo Shrimp.
Peters, who has thrown just 68 1/3 innings this season, continues to build up and get sharp. The Jumbo Shrimp also are in playoff contention, and Peters could factor into the Double-A postseason plans if he isn't promoted to the big leagues first.
Peters is the lone Marlins Top 30 prospect on the AFL roster.
Lee, a standout at Jacksonville, is another highly regarded player within the organization. Acquired from the Rays as part of the Adeiny Hechavarria trade, Lee is a left-handed-hitting, right-handed-throwing outfielder who is batting .311 in 54 games since the trade. Before the deal, he was hitting .321 in 67 games at Double-A Montgomery.
Lee is a candidate to be a backup outfielder with the Marlins in 2018.
The Marlins aren't expected to call up many position players in September, so Lee is not considered a candidate to see big league time this year.
Squire has a 5-8 record with a 3.75 ERA for the Hammerheads, and Del Pozo had a 0.54 ERA in 12 appearances at Jupiter before being called up to Jacksonville.
Meyer, who stands 6-foot-5, has a 2.13 ERA in 18 appearances with the Hammerheads, after he posted a 2.15 ERA at Class A Greensboro.
Vigil, who was with the big league club in Spring Training, has appeared in 23 games with a .303 batting average for Jacksonville after opening the season at Jupiter.
Mooney, a left-handed hitter, has been a utility player at New Orleans, playing shortstop and hitting .220 in 111 games.